Culinary utensil.



N. S. HARTER.

CULINARY UTENSIL.

APPLICATION FILED FEB. 9, 1914 Patented Oct. 6, 1914.

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440% eky gal/M25369".

strArEs PATEN OFFICE.

NOAH s. mama, or Mami ILLINoIs, ss re on ro rim mama COMPANY, or WAUKEGAN, ILLINoIs, a oonrom'rIo or ILLINoIs.

cULINAnY UrENsIL.

I H Specification of: Letters Patent, Application filed February a, 1914. Serial No.'817,685.

Patentedbct. 6, 19 14.

'To aZZ whom it may concern:

Be it known that I, NOAH S. HARTER,"

a citizen of the United States, residing at Waukegan, in the county of Lakeand State of Illinois, have invented certain new and useful Improvements in Culinary Utensils,

of which the following is a specification.

My invention relates to improvements 1n culinary utensils, and has especial reference to devices of this general character wherein the variation of the interior temperature'of a cooking vessel thereof serves to control the application of heat thereto.

One of the general objects of my invention 5 is to automatically control a source of heat supply, or fuel, when temperature within the heating chamber'of the cooklngvess'el rises above, or falls below, a predeterminedi degree. I a j Another object of my present invention is to provide a temperature-responsive device, and to locate it within an auxiliary chamber or flue adjacent to and communicating'with, but separated from the cooking chamber, and to rovide one such flue for each vessel or a series of such vessels so that each vessel F may contribute toward the regulation of the fuel supply. And still another object-of my invention is to provide means for causing a reverse draft, of relatively cold 'air to pass through the auxiliary chamber, or' flue com, controlling device from the.

taining the fuel superposed sections of fines, when the to" or cover, of one of the cooking utensi s is raised, thereby chilling the responsive device 5 and quickly increasing, t that time, heat applied to thecooking chamber.

the

Other and further objects of my inventioni will become readily apparent to persons, skilled in thegart from a consideration of'the 1* following description when taken in co'njunction with drawings, wherein--v Figure 1 is a large, vertical, central sec tion of the utensil. Fig. 2 is a transversesection taken on l1ne 2-2 of Fig. 1'. Fig;

3 is a transverse section taken on line 3'-3 of Fig. 1. .Fig. 4 is an enlarged, vertical sec tion of one side of the lower, or'burner section, show-ing a fragment of one of the cooking sections superposed thereon.

In all the views the same reference characters are employed to indicate similar parts. I p In a copending application, Serial No. T

747,067, filed .Feb. 8th, 1913 I. have shown .meanso screws 32.

an annular rlm, or va and claimed a device generally similar to the device disclosed in this application and therefore several of the'features here'shown are not specifically claimed.

In a particular embodiment, which I have shown for the purpose of clear disclosure of my invention, 10 is an open ended cylindrical burner-containin section provided with a strengtheningbe a' 11, around its bottom edge and having near said bottom edge, a

3 rowof air admitting openings or apertures ,12 andhaving .s m er ew ne r t top and an 'intermedi'ate diaphragm or bottom 13 secured to the sidewall, as by screws 13',

whereby to support the burner. It 'is provided with a pluralit of brackets 10?, secured to the side wal byfmeans of screws, which are adapted to support a superposed cooking'vessel 1 1. The latter is provided with'a bead 15 upon which to support another cooking vessel 16, and the vessel 16 is V provided with a rim 17 in which to rest the lower edge18 of another steaming or cook'- ing vessel 19 or t'he cover 22. The upper vessel is provided with a similar rim 20to receive the lower down turned edge 21 of the cover 22. The vessels 14 and 16 maybe usedtogether or separately, as desired, and henthe vessel :14; or 16 is to be used separately, theedge 1 8" o'f the vessel 19 ma rest in the bead-- 14 y of the vessel. 14. Whi ethe vessels are readily removable and interchangeable, one the other, and (meter the other, the joints connecting them are sufficiently tight to prevent material escapeof steam or heat therefrom,

A, gas bu 1 23, which my be of any wit convenient former type, ispr'ovided gas ;emitting apertures arena with a gas receiving chamber 25. A gas injecti'ng tube 26, is fixed into one side ofthe wall of the.

2 chamber-.25, and the diaphragm casing 27.- 'The casing 27 is divided into chambers 28- and 29, by inean'sof a diaphragm 30," A cover 'to "'31- is secured to. th r The diaphragm 3Q is secured in an annular depression e "cover 31.by solder, or otherwise, .as at"3 3. The diaphragm isada ted to' be seated upon 7 l ire seat 34, which-surrounds'the chamber .29. An open compression'spring35 is seated ag'ainst the center of= the dia hragm 30 and is adapted to beadjusted y means of the screw 36, which presses against a block"37', secured to the sis e casing the heat responsive lower end of the spring. A similar block 38 is secured also to the-upper end thereof and bears directly against the diaphragm. A nipple 39, to which a gas hose or pipe may be, attached, admits gas into the central chamber 29, from which the gas will pass through the opening between the seat 34 and the lower surface of the diaphragm into the chamber 28 and thence into the gas burner 25, when the diaphragm is not seated upon the seat, or upper surfaces-of the wall, inclosing the chamber 29.

Secured in the top, or cover 31, is a pipe 40. A flue, or jacket 41, is secured in vertical position to one side of the wall of the section 10. The pipe 40 passes downwardly toward the bottom of the section 10 into a perforation made through the wall thereof, into the flue 41 and upon its upper end is connected to the lower end of the tube 42, which contains the heat responsive fluid 43.

The vessel 14 is provided with a similar fiue section 44 which registers with the flue 41 and makes telescopic connection therewith, as shown at 45, in Fig. 4, thereby continuing the flue to a point near the top of the vessel 14, and another flue section or jacket 46 is similarly secured to the wall of the vessel 16 and has telescopic connection with the jacket or flue 46 of the section 16, so that the flue above the heat responsive device 42 may be included with each of the sections 14, or 16, and they may be placed one upon the other, above the burner as shown.

An opening 48 is made through the wall of the vessel 16 into the flue 46, and a similar opening 49, is made through the wall of the vessel 14 into the flue 44 of said vessel so. that the air or heat, may equalize to some extent in the vessels and vapor or moisture may pass from the respective vessel down through the flue composed of the sections 46, 44, and 41 into contact with capsule 42. Near the lower extremity of the flue section 41 is an opening 50 through which steam or heated vapor or gas may pass into the chamber of the section 10 from the respective cooking vessels and through the apertures 48 and 49. The heat responsive device or capsule 42, the pipe 40, and the upper portion of the casing 27, is filled with a volatile or expansible fluid, that will become volatilized at a critical temperature so as to readily depress the diaphragm 80 and close the port communicating with the chamber 29, therebyshutting off the gas su ply from the burner 35, or shutting it ofl proportionately as the diaphragm is depressed, and consequently regulating the intensity of the heat, and the size of the flame, issuing from the burner 25, proportional to the temperature within the cooking vessel.

- The operation of the device is substangreater extent than tially as follows: With the parts in the positions shown, and the vessel 14 and 16, preferably containing water, and the inner vessels 52 and 53 containing suitable food, with food in the vessel 19 that is designed to be steamed, the burner may be lighted and the full head of gas will immediately be turned on, as a result of the separation of the diaphragm 30 from the valve seat 34, thereby permittin the gas to pass from the pipe 39, through t e pipe 26, into the burner until sufficient temperature, within the cooking vessels 14 and 16, will create more or less pressure due to the expansion of the air or water contained in the vessels, when vapor, hot air or steam will pass through the openings 48 and 49 down through the flue sections 46 and 44 and 41, surrounding the heat responsive device 42, expanding the fluid therein, thereby depressing the diaphragm 30, to a greater or less extent, and closing the opening between the fuel inlet pipe 28 and the inner chamber 29, reducing the gas supply, to a greater or less extent, at the burner 25. Now should one of the vessels 14, 16, or 19 be lifted from its close fitting contact with the upper surface of the vessel immediately below, and the vapor pressure within the said vessel, thereby be released, air will then pass into the opening 50 and up the flue sections 41, 44, and 46, in a reverse direction, to the hot air coming down through the flue from said vessels, quickly chilling the heat responsive device 42, and contracting the expansible fluid 43 therein, permitting the spring 35 to press the diaphragm back off of the valve seat 34 and allowing a larger quantity of gas to pass into the burner. The tension of the spring '35 may be varied, by means of the adjusting screw 36, so that the movement of the diaphragm 30 will require a higher or lower temperature, as the case may be, to exist within the vessels l4 and 16 to operatively affect the diaphragm 30 in a manner heretofore described. If the tension of the spring 35 is adjusted, by means of the screw 36 so that steam will not exert maximum e ect thereon, when the water has been substantially exhausted from the vessel 14, or 16, hotter dry heat will pass out through the openings 48 or 49 down the flue sections 46 .1, expanding the fluid contained within the chamber or receptacle 42, to a when steam only passes through said flue, and reduce the supply of fuel. By this means the contents of the vessels 14 or 16 is protected against burning, and therefore it is, for this reason, practically impossible to produce an intense heat from the burner 25, after the water has been exhausted from the vessels, as described. Now if any of the vessels be separated, so as to relieve the pressure therein, the heat contained in the flue, the lower end of which is open, will be forced outby reverse drafts of relatively cold air entering the bottom of the flue and passing out through the openings 48 and 49, thereby cooling the receptacle or capsule 42, just as when steam is present, which lowered temperature oper' ates to condense the liquid within the responsive device and permits the spring to' push the diaphragm farther away from the port controlling the gas burner and therefore a greater quantity of gas will enter-the burner, and increase the size of the flame and consequently produce a corresponding increase of heat, while the vessels, or any one thereof is open. It is of course evident that the vessels 19 and 14 may be used together without the intermediate vessel 16, in which event a stopper or closure for the flue section 44 should be placed at'the upper end of the flue to prevent gases from escaping from the top of the fiue to the outside atmosphere. In this event the section 16 may be used in connection with the section 19 and the section 14 removed.

While I have herein shown and described a single embodiment of my invention for purpose of clear disclosure, it is evident that changes may be made in the structure within the spirit and scope of the appended claims.

Having described my invention, WhatI claim is v 1. A device of the character described comprising a separable burner section and a removable, superposed food container sec-- tion; controllable means for fuel supplied to the burner, in said burner section; a responslve means for controlling said fuel-controlling means; a food sectlon; a flue opening into said food section and open to the atmosphere at its lower end, each, vessel car: rying a section of said flue, said heat responsive means located in the flue section carried by the burner section whereby heated vapor orgases escapin from said food section must pass through oth flue sections to the atmosphere and a cooling blast of air will pass'th'rough said flue when said food section is open. I

2. A device of the character described comprising'a separable burner section and a plurality of removable, interchangeable food container sections superposed upon said burner section, one above the other; controllable means for fuelsupplied to the burner, in said burner section; a heat responsive means for controlling said fuelcont-rolling means; a flue opening into each said food section, near their respective up-l per edges, and open to the atmosphere at its lower end, each vessel carrying a section of said flue, said heat responsive means located in the flue section of the burner section whereby heated gases or vapor escaping from either or both said food sections must "pass downward through said fines to the atmosphere and a coolin blast of air will be drawn through said ue when either said food section is opened whereby to increase the fuel supply through said burner.

In testimony whereof I hereunto set my hand in the presence of two witnesses.

NOAH s; HARTER.

In the presence of- J. J. DEITMEYER, FRANK P. TYLER. 

